Machine-brake.



A. RJ OGBURN.

MACHINE BRAKE.

APPLICATION FILED MAR. 2. 1907.

Patented May18 2 SHEETS-SHEET l.,

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MACHINE BRAKE.

APPLlcAloN FILED MAR. 2. |901.

Patented May 18, 1915.

2 SHEETS-SHEET 2.

THE NORRIS PETERS CO., PHOT0-LITHO WASHINGTON, D. C.

ARTHUR R. OGBURN, OF NEWTON, IOWA.

aisance.

Speccaton of Letters Patent.

MACHINE-BRAKE.

Patented May 18, 12315.

Application filed March 2, 1907. Serial No. 360,209.

To all whom it may concern Be it known that l, ARTHUR R. OGBURN, a citizen of the United States, residing at Newton, in the county of Jasper and State of iowa, have invented a certain new and useful lvlachine-Brake, of which the following is a specification.

The objects of my invention are to provide a governor for band cutters and feeders which is designed to control the conveyor, .vhich advances the bundles of grain into the threshing cylinder both by the quantity of straw which is being fed into the cylinder as the straw is advanced, and also by the rotary speed of the driving shaft.

A further object is to provide a governor in which the controlling mechanisms regulated by the amount of straw being advanced by the conveyor, and that which is controlled by tne rotary speed of the driving shaft are controlled by independent mechanisms operating directly on the driven shaft.

My invention consists in certain details in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of a portion of a band cutter and feeder with my governor connected with it, and with the sprocket wheel for operating the driven shaft that operates the conveyer removed. Fig. 2 is a cross sectional view of one side of the band cutter and feeder, showing in elevation my governor and the mechanism by which the same is attached to the frame of the band cutter and feeder. Fig. 3 is a detail view of the interior of the sprocket wheel mounted on the driven shaft which is operated from the driving shaft. Fig. d is a detail, cross sectional view of the band wheel and sprocket wheel mounted on the driven shaft, taken on the line 1 -l of Fig. 3, designed to show their relation to each other. Fig. 5 is a detailed sectional view of the pivotal attachment of the yoke which operates the band with the lever connected therewith. Fig. 6 is a perspective of the yoke which operates the band. Fig. 7 is a detail perspective view of the lever which is pivoted to the yoke and also a portion of the band attached thereto.

Referring to the accompanying drawings,

I have used the reference numeral 10 to indicate the frame of the band cutter and feeder, the numeral 11 the ordinary conveyer upon which the bundles of grain are thrown and by which they are advanced to the threshing cylinder.

l have provided the ordinary driven shaft 12 which extends across the band cutter frame 10 and by which the conveyer 1 is driven. liotatably mounted on one end of the driven shaft 12 is a sprocket 13 having a rim 14 extending inwardly from it. Secured to the driven shaft 12 and inside of the rim 14 is a collar 15 having two lugs 16 and 17 thereon, and also having the arms 18 and 19 formed integral with it. Fivoted to the lugs 16 and 17 are two levers, 2O and 21, to the outer end of which are pivoted respectively the shoes 22 and 23 which are designed to engage the interior of the rim lei- Connecting the arm 18 and the lever 2O is extensile spring 2li designed to maintain the shoe 22 in engagement with the interior of the rim 14e. Connecting the arm 19 and the lever 21 is a spring 25 designed to maintain the shoe 23 in engagement with the interior of the rim 14. The pin 26 which forms the pivot between the lever 20 and the shoe 22 extends a considerable distance beyond the inner edge of the rim 14. The pin 2'? which forms the pivot between the lover 21 and the shoe 23 also extends inwardly beyond the inner edge of the rim 14. ltotatably mounted on the driven shaft 12 inside of the sprocket 13 is a band wheel 28, the outer portion of which is adjacent to the edge of the rim 111. 0n the band wheel 28 and adjacent to its outer periphery, l have provided two projections 29 and 30 to form a groove 31 between them which receives the inner end of the pin 26. 0n that portion of the band wheel 28 which is diametrically opposite from the projections 29 and 30, l have provided two similar projections 32 and 33 to form a groove 341 between them to receive inner end of the pin 27.

On account of the arrangement above described, it will be seen that when the band wheel 28 is allowed free rotation by the loosening of the band 4:2, the sprocket wheel 13 will also rotate, and will drive the shaft 12 because the shoes 22 and 23 will be held by their springs against the rim of the sprocket wheel. l/Vhen however the band wheel is held against rotation, the shoes 22 and 23 will be thrown out of engagement oivotall attached'to the rea-r ooi-tion of .i

ltween the arms 5l and 52 is` asp; AExtending across the topv portion. of

with the rim le and consequently the vdriven shaft will not be rotated as the sprocket 13 is driven.

Secured to the side of the traine l0 end at the rear of the band wheel 28, Vhav provided a bracket 35 to the lower forward end of which, l have pivotally attached the lever 36, having the round head 37 thereo which is designed to enter recess in th forward end of the lever 88, which lever i t braclretv. lin the upper portion of thhracket 35 l have provided bearing 39 to the purpose hereinafter made clear. Pivotally connecting the 'forward end of the iever 3G and the rear end of the lever 38 is a coil spring 'fi-0, designed to hold hese levers in the desired position relative to each other for meintaining Athe parte of the device otellvV attached to the forward end of theV lever 36. is a screw threaded rod in Figs. l and 5 of the drawings.

I have provided a band which y encirclesthe hand wheel 2S and which isf pivotallv secured at one end to the lever 8f3 and at its other end is adjustahiy secured to the screw threaded rod il hy eens of the collar 43 and thumb screw dei; is adjustment is `provided to incrcaseror diminish the friction 1oetween the band di); and hand wheel 28 whenever this is necessary to obtain the necessary results, and to provide `for the wear of the band.

Pivotally attached to the forward end ol el rshown the lever 36 is a yoke shown olea-rij] in to engage the upper portionvojf the oearingA 39, and prevent the rod from siidingl downwardly when the pin 49 is in engegei'nent with'the bearing 39. Mounted on the upper end of the rod' i? Vis aV sliding niemeer 5t- Which has the two 'z'rnis 5l and 52 extend ing outwardly frein its body portion through which arms the rod if? extends.V li/iounted on that portion of the rod i? whic frame l0 is a shaft 54- heving a series of rods 55 extending downwardly from it in such way that the lowerends aresoine distance above the forward end of the "coi'weyer"ilV777 of a in I their proger relation to each other. 'Bv this' This rod 47 extends through the the band cutter "raide and' as shown clearly in Figsjl and' ofV the drawings, Secured to the snart 54 hy ineans set screw 55a and at. right angles to said sl is an lerin 56 which has a forked end 57, taie tines of which on opposite sides oi KVthe rod fi? and the body portion of the sliding ineinher 30. These tines are in Contact with the soring f have nrorided a screw threadec noper end the rod i? on which is a thurnh screw for maintaining the sliding ineniher 50 the idr-oper position relative to theupper end oit' the said and for raising and lower'rg the end of the arin 56 to adjust e for thus ref fuiatino the i iiow VVof 7 Q c 'Mahi the rods f ee end 57 against the in obere() s elevate suiV e rwn upwardly.

to he drawn Q8 and pre-Y lthe-shoes Q2 ei nent with .ne convever =e seen that this the foin tie sand usV al- 05 i i 's 1 i Q3 tone ti wn into iringsv 24 and 25 with .E 7 1 t4 Y n 5A: and thus by the oss pieces@ .ch is'v supih@ bell sever iz@ djiis'tah v lsecured to .the

`s'iffies: of vthe Y A Y i l et the'rear of theV gear 70 1s shearing 72 on'which' is rotatably lf3@ t on ci the ends of the 55 above 8U mounted a gear 73 in mesh with gear 70. Secured to the gear 73 is a sprocket 74:. Passing over the sprocket 74 and the sprocket 13 is a sprocket chain 7 5, through which the conveyor is driven. As the driving shaft is driven at a normal rate of speed, the ball governor will not affect in any way the operations of the convever, but as soon as the speed of the driving shaft diminishes and is below a normal point, the balls of the ball governor will be at the interior limits of movement and the forward end of the lever 60 will be thrown downwardly and the rear end upwardly and the yoke 45 raised upwardly, the band tightening around the band wheel, throwing the conveyer out of operation. As the speed of the driving shaft increases again the band will be released and the conveyer driven again. It will be seen that when the device above described is in practical operation, the conveyer will be driven from the driving shaft and will be thrown out of operation either by the amount of straw on the conveyer, or by the governor which is controlled by the speed of the driving shaft.

Having thus described my invention, what l claim and desire to secure by Letters Patent of the United States, therefor is l. In a machine of the class described, the combination of a shaft, a friction clutch on said shaft, said friction clutch having a control band, a ball governor having an upwardly extending axis of rotation, a lever, adjusting means for connecting said lever with said governor, the opposite end of said lever being operatively connected with one end of said friction clutch band to loosen the clutch and stop the shaft when the speed of the governor drops below normal.

2. ln a machine of the class described, the combination of a driving shaft, a friction clutch on said driving shaft and having a control band, a spring-pressed lever connected with both ends of said band and positioned to swing when the band is to be tightened or loosened, a ball governor, means for driving said governor in accordance with the speed of the machine, a rock lever pivoted to swing on a horizontal axis, one end of said lever being adj ustably connected to said ball governor' and the other end being operatively connected to tighten or loosen the band by swinging the lever to which the ends of the band are connected.

8. In a machine of the class described, the combination with a driving shaft, a frictional clutch carried thereby and having a control band, of a pivotally mounted lever, a lever pivotally secured to the first mentioned lever, means for connecting the last mentioned lever to the control band, means for connecting said levers, a governor, a horizontal lever connected at one end of said governor, and the opposite end of said horizontal lever being connected to the means for connecting the first mentioned levers for the purpose specified.

4:. In a machine of the class described, the combination with a drive shaft, a frictional clutch having a control band, of a spring actuated lever connected to the control band, a yoke pivotally connected to said lever, a centrifugal governor vertically arranged, and a horizontally arranged lever operated upon at one end by said governor connecting said yoke with the governor for the purpose specified.

5. In a machine of the class described, the combination with the drive shaft, a friction clutch having a control band, of a pivotally mounted lever, a second lever fulcrumed upon the first lever, a coil spring connecting said levers, the second lever being connected to both ends of the control band, a yoke connected to the second lever, a horizontally arranged lever, a centrifugal governor connected to one end of said horizontally arranged lever, and the opposite end of said horizontally arranged lever being adapted to rest within said yoke substantially as and for the purpose specified.

ARTHUR R. OGBURN.

Witnesses:

S. F. CHRISTY, F. C. DAHLBERG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ID. C, 

